/* 自定义样式 */
body {
	font-family: 'Roboto', 'Microsoft YaHei', sans-serif;
	line-height: 1.6;
}

.custom-navbar {
	background: rgba(0,0,0,0.9);
	padding: 15px 0;
}

.nav-item{
	  white-space: nowrap;
}
.parallax-section {
	background-attachment: fixed;
	background-position: center;
	background-repeat: no-repeat;
	background-size: cover;
	padding: 80px 0;
}

#intro {
	background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('../images/banner.jpg');
	background-size: 100% 100%;
	color: white;
	text-align: center;
	min-height: 100vh;
	display: flex;
	align-items: center;
}

#overview {
	background: #f8f9fa;
	padding: 80px 0;
}

.section-title h2 {
	font-size: 2.5rem;
	margin-bottom: 30px;
	color: #333;

}

.header-container {
	display: flex;
	align-items: center;
}

.logo {
	margin-right: 15px;
}

#title-text {
	color: white !important;
	font-size: 1.2rem;
	text-decoration: none;
}

.navbar-nav .nav-link {
	color: white !important;
	margin: 0 10px;
}

.navbar-nav .nav-link:hover {
	color: #007bff !important;
}

.btn-primary {
	background-color: #007bff;
	border-color: #007bff;
}

.table-bordered {
	border: 1px solid #dee2e6;
}

.table th, .table td {
	padding: 12px;
	vertical-align: middle;
}

footer {
	background: #333;
	color: white;
	padding: 30px 0;
	text-align: center;
}

.go-top {
	position: fixed;
	bottom: 30px;
	right: 30px;
	background: #007bff;
	color: white;
	width: 50px;
	height: 50px;
	text-align: center;
	line-height: 50px;
	border-radius: 50%;
	text-decoration: none;
	display: none;
}

.preloader {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: white;
	z-index: 9999;
	display: flex;
	justify-content: center;
	align-items: center;
}

.sk-rotating-plane {
	width: 40px;
	height: 40px;
	background-color: #007bff;
	animation: sk-rotateplane 1.2s infinite ease-in-out;
}

@keyframes sk-rotateplane {
	0% { transform: perspective(120px) rotateX(0deg) rotateY(0deg); }
	50% { transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg); }
	100% { transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg); }
}

.organization-section {
	background: white;
	padding: 80px 0;
}

.committee-section {
	background: #f8f9fa;
	padding: 80px 0;
}

.topics-section {
	background: white;
	padding: 80px 0;
}

.register-section {
	background: #003366;
	color: white;
	padding: 80px 0;
}

.contact-section {
	background: #f8f9fa;
	padding: 80px 0;
}

.member-card {
	text-align: center;
	margin-bottom: 30px;
}

.member-card h3 {
	font-size: 1.1rem;
	margin-bottom: 5px;
}

.member-card h4 {
	font-size: 0.9rem;
	color: #666;
	margin-bottom: 5px;
}

.member-card p {
	font-size: 0.8rem;
	color: #888;
}

.member-avatar {
	width: 110px;
	height: 160px;
	border-radius: 2px;
	display: block;
	margin: 0 auto 15px auto;
	object-fit: cover;
	border: 2px solid #e9ecef;
	transition: transform 0.3s ease;
}

.member-avatar:hover {
	transform: scale(1.05);
}

.topic-card {
	background: white;
	padding: 25px;
	border-radius: 15px;
	box-shadow: 0 5px 15px rgba(0,0,0,0.1);
	margin-bottom: 30px;
	height: 100%;
	position: relative;
	overflow: hidden;
	transition: all 0.3s ease;
}

.topic-card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 3px;
	background: linear-gradient(90deg, #007bff, #0056b3);
}

.topic-number {
	position: absolute;
	top: 15px;
	right: 15px;
	font-size: 2rem;
	font-weight: bold;
	color: rgba(0,123,255,0.1);
	opacity: 0.8;
}

.topic-card h4 {
	color: #007bff;
	margin-bottom: 20px;
	font-family: serif;
}

.organization-item {
	margin-bottom: 15px;
}

.organization-item h3 {
	font-size: 1.1rem;
	margin-bottom: 0;
}

/* 下载页面样式 */
.download-category {
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-category:hover {
	transform: translateY(-5px);
	box-shadow: 0 8px 25px rgba(0,0,0,0.15) !important;
}

.download-item {
	transition: all 0.3s ease;
	border: 1px solid #e9ecef !important;
}

.download-item:hover {
	border-color: #007bff !important;
	background-color: #f8f9ff;
	transform: translateX(5px);
}

.download-info h5 {
	color: #333;
	font-weight: 600;
}

.download-actions .badge {
	font-size: 0.75rem;
	padding: 0.4em 0.6em;
}

.download-notice {
	border-left: 4px solid #007bff;
}

.download-notice ul li {
	padding: 0.25rem 0;
}

.download-notice .fas {
	width: 16px;
}

/* 文件图标样式 */
.fas.fa-file-pdf {
	font-size: 1.2rem;
}

.fas.fa-file-word {
	font-size: 1.2rem;
}

.fas.fa-download {
	font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
	#intro h1 {
		font-size: 2rem !important;
	}
	
	#intro h2 {
		font-size: 1.3rem !important;
	}
	
	#intro h3 {
		font-size: 1rem !important;
	}
	
	.section-title h2 {
		font-size: 2rem;
	}
	
	.topic-card {
		padding: 20px;
	}
	
	.member-card {
		margin-bottom: 20px;
	}

	.member-avatar {
		width: 60px;
		height: 60px;
		margin-bottom: 10px;
	}
}

/* 平滑滚动 */
html {
	scroll-behavior: smooth;
}

/* 导航栏激活状态 */
.navbar-nav .nav-link.active {
	color: #007bff !important;
	font-weight: 500;
	background-color: rgba(0, 123, 255, 0.1);
	border-radius: 5px;
}

/* 卡片悬停效果 */
.topic-card:hover {
	transform: translateY(-5px);
	box-shadow: 0 10px 25px rgba(0,0,0,0.15);
	transition: all 0.3s ease;
}

/* 按钮悬停效果 */
.btn:hover {
	transform: translateY(-2px);
	transition: all 0.3s ease;
}

/* 表格样式优化 */
.table-dark {
	background-color: rgba(255,255,255,0.1);
}

.table-dark th,
.table-dark td {
	border-color: rgba(255,255,255,0.2);
}

/* 文字选择颜色 */
::selection {
	background-color: #007bff;
	color: white;
}

::-moz-selection {
	background-color: #007bff;
	color: white;
}

/* 酒店预订页面样式 */
.hotel-item {
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hotel-item:hover {
	transform: translateY(-5px);
	box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
}

.hotel-item h4 {
	border-bottom: 2px solid #007bff;
	padding-bottom: 10px;
}

.hotel-item ul {
	list-style-type: none;
	padding-left: 0;
}

.hotel-item ul li {
	padding: 5px 0;
	border-left: 3px solid #007bff;
	padding-left: 15px;
	margin-bottom: 5px;
}

.hotel-info .alert {
	border-left: 4px solid #17a2b8;
}

/* 大会报告专家卡片样式 */
.keynote-speaker-card {
	background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
	border-radius: 20px;
	padding: 30px;
	margin-bottom: 25px;
	box-shadow: 0 10px 30px rgba(0,0,0,0.08);
	border: 1px solid rgba(0,123,255,0.1);
	transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
	position: relative;
	overflow: hidden;
	height: 100%;
}

.keynote-speaker-card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 4px;
	background: linear-gradient(90deg, #007bff, #0056b3, #007bff);
	background-size: 200% 100%;
	animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
	0% { background-position: -200% 0; }
	100% { background-position: 200% 0; }
}

.keynote-speaker-card:hover {
	transform: translateY(-8px) scale(1.02);
	box-shadow: 0 20px 40px rgba(0,123,255,0.15);
	border-color: rgba(0,123,255,0.3);
}

.speaker-avatar {
	text-align: center;
	margin-bottom: 20px;
}

.avatar-placeholder院士,
.avatar-placeholder研究员,
.avatar-placeholder教授 {
	width: 80px;
	height: 80px;
	margin: 0 auto 15px;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 2rem;
	color: white;
	position: relative;
	transition: all 0.3s ease;
}

.avatar-placeholder院士 {
	background: linear-gradient(135deg, #ff6b6b, #ee5a24);
	box-shadow: 0 8px 20px rgba(238, 90, 36, 0.3);
}

.avatar-placeholder研究员 {
	background: linear-gradient(135deg, #28a745, #20c997);
	box-shadow: 0 8px 20px rgba(40, 167, 69, 0.3);
}

.avatar-placeholder教授 {
	background: linear-gradient(135deg, #007bff, #0056b3);
	box-shadow: 0 8px 20px rgba(0, 123, 255, 0.3);
}

.avatar-placeholder院士:hover,
.avatar-placeholder研究员:hover,
.avatar-placeholder教授:hover {
	transform: scale(1.1) rotate(5deg);
}

.speaker-info {
	text-align: center;
	padding: 20px 0;
}

.speaker-info h4 {
	font-size: 1.4rem;
	font-weight: 600;
	margin-bottom: 15px;
	color: #2c3e50;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 12px;
	flex-wrap: wrap;
}

.speaker-info .badge {
	font-size: 0.7rem;
	padding: 5px 12px;
	border-radius: 20px;
	font-weight: 500;
	letter-spacing: 0.5px;
}

.institution {
	font-size: 0.95rem;
	color: #6c757d;
	margin-bottom: 15px;
	line-height: 1.4;
}

.speaker-details {
	margin-top: 15px;
}

.detail-item {
	display: inline-block;
	background: rgba(0,123,255,0.08);
	color: #007bff;
	padding: 8px 15px;
	border-radius: 25px;
	font-size: 0.85rem;
	font-weight: 500;
	transition: all 0.3s ease;
}

.detail-item i {
	margin-right: 6px;
	font-size: 0.9rem;
}

.detail-item:hover {
	background: #007bff;
	color: white;
	transform: translateY(-2px);
}

/* 分隔线样式 */
.section-divider {
	position: relative;
	text-align: center;
	margin: 40px 0;
}

.section-divider::before {
	content: '';
	position: absolute;
	top: 50%;
	left: 0;
	right: 0;
	height: 2px;
	background: linear-gradient(90deg,
		transparent 0%,
		rgba(0,123,255,0.3) 20%,
		rgba(0,123,255,0.5) 50%,
		rgba(0,123,255,0.3) 80%,
		transparent 100%);
}

.divider-icon {
	display: inline-block;
	background: white;
	padding: 15px 25px;
	border-radius: 50%;
	box-shadow: 0 4px 15px rgba(0,123,255,0.2);
	position: relative;
	z-index: 1;
}

.divider-icon i {
	font-size: 1.5rem;
	color: #007bff;
}

.topic-section {
	padding-top: 40px;
}

/* 大会报告卡片与主题部分的分隔 */
.keynote-speaker-card + .section-divider {
	margin-top: 60px;
}

/* 标题样式增强 */
.section-title {
	position: relative;
	margin-bottom: 50px;
}

.section-title::after {
	content: '';
	position: absolute;
	bottom: -15px;
	left: 50%;
	transform: translateX(-50%);
	width: 80px;
	height: 3px;
	background: linear-gradient(90deg, #007bff, #0056b3);
	border-radius: 2px;
}

/* 响应式优化 */
@media (max-width: 768px) {
	.keynote-speaker-card {
		padding: 20px;
		margin-bottom: 20px;
	}

	.avatar-placeholder院士,
	.avatar-placeholder研究员,
	.avatar-placeholder教授 {
		width: 60px;
		height: 60px;
		font-size: 1.5rem;
	}

	.speaker-info h4 {
		font-size: 1.1rem;
	}

	.speaker-info .badge {
		font-size: 0.6rem;
		padding: 4px 8px;
	}

	.institution {
		font-size: 0.85rem;
	}

	.detail-item {
		font-size: 0.75rem;
		padding: 6px 10px;
	}
}